You are going on about foreigners living in, and moving to Thailand, like this is the big economy for Thailand. That is pure rubbish!! What you are talking about, is just a drip in the economic ocean. Thailand makes more money out of only Chinese tourists, than they do from all the expat community in Thailand. You are so far from the truth as you can be!
Let´s say like this. There are approximately 160k expats living in Thailand. Most of us do not spend that much on car, school nor home/condo/house. Let´s make a high estimation, at 2,5 million baht per foreigner regarding car and house in general. that would be 160 000 x 2,5M = 400B baht. This number, is also what expats have been contributing to during a period of more than 30 years. Something that would make it approx. 13,3B baht per year.
After that it will be 60k baht per expat x 12 month. 720 000 baht x 160 000 = 115B baht per year. Gives a total of, let´s say 130B baht per year.
Looking at numbers from 2019, only the Chinese tourism generated 400B baht in a year. Thailand tourism is on the rise again, and will surely reach 3T baht per year in a couple of years.